最近在看Spring,感觉 xml+反射 可以完成很多事情， 其中 xml 可以利用jdom/dom4j 等解析工具进行解析

下面给出一个jdom 解析xml的例子

个人感觉jdom解析xml与javaScript的便准dom读取的函数有异曲同工之妙。如 js的Element.getAttribute("xxx")...

jdom的一下载地址 http://download.csdn.net/detail/manymore13/5049145

项目结构：

解析xml 的Java代码

import java.util.*;
import org.jdom.*;
import org.jdom.input.SAXBuilder;
public class Sample {
  public static void main(String[] args) throws Exception{ 
    SAXBuilder sb=new SAXBuilder();
    
    Document doc=sb.build(Sample.class.getClassLoader().getResourceAsStream("beans.xml")); //构造文档对象
    Element root=doc.getRootElement(); 
    List<?> list=root.getChildren("bean");
    
    for(int i=0;i<list.size();i++){
       Element element=(Element)list.get(i);
       String id=element.getAttributeValue("id");
       String clazz=element.getAttributeValue("class");
       System.out.println("dom一层节点id: "+id);
       System.out.println("dom一层节点class: "+clazz);
       
       //看看是否有property
       if(element.getChildren("property") != null){
    	  List<?> propertyList = element.getChildren("property");
    	  for(int j=0; j<propertyList.size(); j++){
    		  Element element2 = (Element)propertyList.get(j);
    		  String name = element2.getAttributeValue("name");
    		  System.out.println("dom二层节点name: "+name);
    	  }
       }
    }  
  
  
  
  
	SAXBuilder sx=new SAXBuilder();
	
	Document doc1=sx.build(Sample.class.getClassLoader().getResourceAsStream("test.xml")); //构造文档对象
	Element root1=doc1.getRootElement(); //获取根元素HD
	List<?> list1=root1.getChildren("disk");
	
	for(int i=0;i<list.size();i++){ 
       Element element=(Element)list1.get(i); 
       String name=element.getAttributeValue("name"); 
       String capacity=element.getChildText("capacity");//取disk子元素capacity的内容 
       String directories=element.getChildText("directories"); 
       String files=element.getChildText("files"); 
       
       String text = element.getText();
       System.out.println("dom节点内的内容为(调用trim后):"+text.trim());
       
       System.out.println("磁盘信息:"); 
       System.out.println("分区盘符:"+name); 
       System.out.println("分区容量:"+capacity); 
       System.out.println("目录数:"+directories); 
       System.out.println("文件数:"+files); 
       System.out.println("-----------------------------------");  
	  }
	}
  
} 

beans.xml

<beans>
	<bean id="u" class="com.bjsxt.dao.impl.UserDAOImpl" />
	<bean id="userService" class="com.bjsxt.service.UserService" >
		<property name="userDAO" bean="u"/>
	</bean>
</beans>

test.xml

<?xml version="1.0" encoding="UTF-8"?>
<HD>
  <disk name="C">
    xxxxxxxxx
    <capacity>8G</capacity>
    <directories>200</directories>
    <files>1580</files>
  </disk>
 
  <disk name="D">
    <capacity>10G</capacity>
    <directories>500</directories>
    <files>3000</files>
  </disk>
</HD>